2 x Multiplus ii 48/3000/35-32 in parallel
1 x Bluesolar MPPT 150/70
8 x Trojan T125
18 x Renesola 300w panels 6 strings with 3 panels per string
Running ESS feeding excess to the grid.
I started off with 1 multiplus and 9 panels with average output as per graph.
I then upgraded with another 9 identical panels. The output was capped at just over 2kw.
And after adding another multiplus it is now capped at 3,6kw from 10am to 2pm.
Thinking that the inverter current is derated due to temperature as the internal fans switch on at 09:30 in the mornings already with room temperature between 20-23 degrees C, I have installed 2 120mm ac fans on each inverter and another one on the mppt ducting air into the bottom intakes. Before the mppt was almost hot to the touch, and now cool after installing the fan from 10-4pm. The fans made practically no change to the solar output.
MPPT current at the peak readings is 108V and 33A that is just over 50% capacity. At 3,6kw production the inverter is running at exactly 60% of the rated output. Any suggestions as to why production is limited or capped?